The Humboldt County Drug Task Force called in the bomb squad today at a marijuana grow behind the former Eel River Sawmill, north of Rio Dell, after grenades -- later found to be inert -- were discovered at the scene.

Three people were arrested after the drug task force served a warrant at 7:15 a.m.: 21-year-old Ben Titchener, and Nathan Titchener and Beth Hendry, both 28, according to law enforcement. Officials said 576 plants, a large amount of cash, military grade body armor, high-capacity magazines and assault weapons were recovered at the scene. The structure was protected by guard dogs, according to law enforcement.

Officials said they had received numerous complaints about a possible grow at the site.

The city of Rio Dell has condemned the structure, formerly the Eel River Sawmill offices, according to Drug Task Force Lt. Wayne Hanson.

The three were arrested on a number of charges, including suspicion of cultivation of marijuana, possession of marijuana for sale, and possession of possible explosive devices.

The Fortuna Police Department and the Humboldt County Sheriff's Office also aided in the search.